| 摘要 |
<p>The indexable insert possesses two parallel cutting edges (12, 14) on opposite sides of an indexable insert body (10) in the form of a rectangular block. In the intermediately placed top surface (20) descending toward the center line (M) there is a chipbreaking structure comprising alternating projections (16) and recesses (18). These projections and recesses constitute a row, centered on the center line (M), of spherical-like chipbreaking bodies, between which concave chip guiding surfaces are formed. There results an even flow of chips with the formation of short chips, which are free of grooves and tears along the edges.</p> |
